products and attributes question ?

Assume I'm trying to sell shoes. The shoe product id is 'xyz'. I have 3 pairs of them, one size 7, another size 8 and another size 9. I set the product up, and make an attribute 'shoe size' with three values (in a dropdown), 7 , 8 ,9.

Someone purchases the size 8, but the attributes still reflect size 7, 8,9 for the next customer.

Another customer also tries to buy the xyz size 8, (zero of size 8 in stock now) , even though my availability of 'xyz' is 2 pairs (size 7 and 9) ?

You can't go and change the attributes every time a purchase is made, so how do you prevent this situation ???

Must the product be setup differently ??

Thanks,

There is a mod for this I think - something like "Stock by Attributes".

Have not used it so hopefully someone else more expert can help with better advice.

cheers
Leah

i want to start my own shoe store too, just wondering if there is a solution for this. better yet is there any already available shoe store eCommerce packages?